docs: def DtypeToType(self, dtype):
      """Converts a Numpy dtype to the FeatureNameStatistics.Type proto enum."""
      if dtype.char in np.typecodes['AllFloat']:
        return self.fs_proto.FLOAT
      elif (dtype.char in np.typecodes['AllInteger'] or dtype == np.bool or
            np.issubdtype(dtype, np.datetime64) or
            np.issubdtype(dtype, np.timedelta64)):
        return self.fs_proto.INT
      else:
        return self.fs_proto.STRING